Key Features:
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Reversible Function: Works as both a cooler and heater by reversing polarity 
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High ΔT Capability: Up to 67°C temp difference between hot/cold sides 
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High Power Output: 12A current rating for rapid cooling 
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Compact Form Factor: 40mm square for flexible mounting in small spaces 
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Multi-Purpose Use: Ideal for electronics cooling, lab experiments, or custom cooling projects. 
Specifications:
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Model: TEC1-12712 
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Operating Voltage: 12V DC 
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Maximum Voltage (Vmax): 17.2V DC 
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Operating Current: 12A 
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Maximum Temperature Differential (ΔT): 67°C 
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Number of Thermocouples: 127 junctions 
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Dimensions: 40mm x 40mm x 3.3mm 
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Polarity Reversible: Yes (for heating or cooling) 
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Material: Ceramic with internal semiconductors 
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Color: White with insulated leads. 
Applications:
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CPU/GPU/laser diode cooling 
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DIY mini refrigerators or wine coolers 
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Water coolers and drink chillers 
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Battery or enclosure thermal management 
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Scientific thermal experiments 
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Thermal cycling applications